Suspended scaffold



Aug. 17 1926.

A. M. BATES SUSPENDED SGAFFOLD Filed May 4, 1925 Patented Aug. 17, 192@nPATENT ortica.

AZARIAH M; BATES, or noWNs, KANSAS.

SUSPENDED SCAFFOLD.

Application filed May 4,

This invention relates to 'improvements in scaffolds and moreparticularly to a Scaffold designed to be suspended upon a bill board tosupport a sign painter or bill poster. v

One of the objects of the present 1nvention is to provide a scaold whichmaybe readily erected and supported solely by the bill board and which,when properly suspended will be firmly Supported in place so that a signpainter or bill poster may con- ,veniently reach all portions of thesurface of the bill board.

Another object of the invention is to provide a Yscaffold for thepurpose Stated embodying a minimum number of parts so that there will bepractically no obstruction `of the surface of the bill board, therebypermitting the sign painter or bill poster to work without interferenceon the part of the scaffold.

Another object of the invention is to provide a scaffold for the purposestated soy Aconstructed that it may be quickly and conveniently mountedupon any standard co'n struction of bill board and adjustedlongitudinally thereof without any readjustment of the parts so that bya mere shifting of the scaffold structure the lworkman may convenientlypaint upon or apply posters to the selected area portion of the billboard.

Another object of the invention is to provide a scaffold for the purposestated, so constructed that it may be readily mounted upon a bill boardand dismounted and, when dismounted, may be compactly arranged fortransportation.

Another object of the invention is to so construct the scaffold that itmay be adjusted to support a workman at different elevations, dependingupon the height of the bill board.

In the accompanying drawings :e

Figure 1 is a front elevation of the scaffold embodying the presentinvention mounted upon a bill board.

Figure 2 is a vertical sectional view taken on the line 2-2 of Figure 1,looking in the direction indicated by the arrows.

Figure 3 is a horizontal sectional view taken on the line 3 3 of Figure2, looking in the direction indicated by the arrows.

The scaffold comprises a pair of suspension members indicated ingeneralby the numeral 1 and each of these members vcom- 1225. serial No.27,905.

.prises a-tubular upright 2 whichis preferably of a length approximatingthe height of an ordinarybill board. The vupper end of each vupright isflattened and bent as at 3 to form ai suspension hook 4, which eX- tendssubstantially `rat right angles rear' wardly from the upper Aend of theupright and is of a length substantially equal to the width of the upperAside of the ordinary bill board, the hook terminating in a downvv'ardlyVturned end portion 5 which is de. signed to engage behindy the top ofthe bill board, as clearly shown in Figure 2 of the drawings, so thatthe upright 2 is suspended in vertical position in front of the billboard7 the bill board being indicated inv i general by the numeral 6. ltwill be evident by reference to Figure 2, that the upright vis suspendedsubstantially in parallelism to the face of the bill board. Y

The supporting uprights 2 are designed to support a platform board whichis indicated by the numeral 8, and for this purposeth e uprights 2 areprovided with sup port-ingarms which are indicated in general vby thenumeral 9 and which will now be described. Each of the supporting arms 9preferably comprises a tubular arm member 10 which is pivotally mountedat one end, by a bolt 11, between the spaced members 12 .of a yoke 13which is disposed to embrace the supporting upright 2, the bight of theyoke snugly fitting the said upright. A bolt A111: is secured throughthe bight portion of the yoke 13 and is fitted through one or another ofa series of openings 15 formed in the opposite sides of the tubularupright 2, the yoke being adapted, in this manner, to be supported atvarious positions of elevation upon the respective upright. By pivotallyconnecting the arms 10 with the yokes 13, the arms are adapted to assumethe horizontal supporting position shown in the drawings, when thescaffold is in use or, when the scaffold is being transported from placeto place, may be folded to lie beside the respective uprights and,therefore, occupy but little space and render the structure morecompact. In order to Support the arms lO in horizontal position, a chainor other flexible supporting element 16 is connected at its lower end asat 17, to the outer end of each arm and at its upper end is connected toan eye boltl 18 which is fitted interchangeably in openings 19 formed inthe supporting uprights 2, nuts 20 being threaded upon the Shanks of theeye bolts to secure the same in place. lt will be understood at thispoint that the arms 9 may be adjusted upon the uprights to .assumedifferent positions of elevationby removing' the bolts ifi andvertically adjusting the yokes 13 upon the respective uprights andreplacing the bolts, and aitert'his adjust# nient has .been effected,the eye bolts 18 will be 'correspoi j idjnfs the chains vor other ilexibe supporting` elements are tauft, tlie-.arms l() Will Ventendhorizontally o i' vfright angles from the upright The om m 'board 8is-either in tlieiorm g board or may be made up of two or `more boardssuitably assembled and secured together. v ri, pair oi cleats 2l issecured to the under side ot the platform board `or near each endthereo'lI and the cleats oi Teach pair are so spaced that they Willapproximately engage against the op- `posite sides of the supporting arml0 upon which the Correspending` end ot the platform board is disposed,the board being, in this manner, not only supported y the ari; 'l0 l utbeing' likewise Aheld againstlongitudinal displacement and thesuspending members being likewise held 'ag/a' 'i relative displace ment.

From the foregoing description oi' theinvention, it will be understoodthat in the use ot the scaffold vthe suspension members are engaged attheir hooked vupper ends over the upper edge of the bill board uponwhich painting` vis to be done or postersl applied, and, after theA armsl0 have been properly positioned, the platform board 8 is disposed tedso that when Vever. i

at its end portions upon the supporting arms l0 andvvill then constituteay support 'for thewvorliman. lt Will also be evident that theapplication of the scaffold to the bill board' andits removal therefromdoes not in any Way-mar or injure the board and the application andremoval oi' the scaiiold may di-'ly andfquiclrly accomplished Withoutthe employment of any tools Whatsolt will false. be epident {tlf-at vthestrucis exception l substantial although in construcn and, jin Weightort such clima-actor' -tliat its ,presence upon'the board does not inany Way in er- `.tere iwith :the lab'oi'sy oi: the painter or'bill Itwill `also be'efv'ident `that. the

--ructuie, when removed from Vlthe board,

porta' I lilaving thus' describedithe invention, ywhat l claim is:-

Ein upright having` Va suspending hook at Tel to 'the outer endof thepivoted arm, and an eve bolt the lreeend 'of `the supporting element andadaptedrzto 'engage a'selected opening'r ot the upright `to secure 'thearm in the required position.

ln testimony whereof AZAR-IAE M.

l aiiiX my signature.

Barns. [s s] end vand ,provided in its Ylength

